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A kind of preparation method and application of anti-corrosion auxiliary agent for graphene-based composite materials

A composite material and graphene-based technology, applied in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor dispersion of graphene and single anti-corrosion performance, so as to improve compatibility and improve Anti-corrosion performance, the effect of prolonging the diffusion path

Active Publication Date: 2021-12-17
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphene is a two-dimensional material with stable chemical properties and excellent physical properties. After being added to the polymer coating, its excellent shielding effect can prevent the corrosive medium from contacting the metal surface, greatly improving the anti-corrosion performance of the polymer coating. However, the dispersion of graphene is poor, and the anti-corrosion performance is single. It is necessary to prepare a graphene-based composite material by modifying graphene, and add it to the polymer coating as a corrosion inhibitor to improve the dispersion of graphene and strengthen the coating. Excellent anti-corrosion performance, reduce metal corrosion, save resources, prolong the service life of metal, and reduce potential risk factors

Method used

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  • A kind of preparation method and application of anti-corrosion auxiliary agent for graphene-based composite materials
  • A kind of preparation method and application of anti-corrosion auxiliary agent for graphene-based composite materials
  • A kind of preparation method and application of anti-corrosion auxiliary agent for graphene-based composite materials

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Experimental program
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Effect test

Embodiment 1

[0033] 1. Preparation of graphene-based composites

[0034] (1) Preparation of graphene / polyaniline composites

[0035] Add 0.1 g of graphene nanosheets and 90 mL of deionized water to a round-bottomed flask, sonicate at room temperature for 5 h, add 0.2 g of aniline monomer and 1.5 g of phytic acid solution (70 wt%), stir at 0°C for 4 h, and initiate Ammonium persulfate and 0.5g phytic acid solution (70wt%) were dissolved in 30mL of deionized water, and were added dropwise to the above dispersion liquid at a rate of 3 seconds per drop at 0°C, kept stirring for 8 hours, and then successively filtered by suction, Washing with deionized water and drying to obtain the graphene / polyaniline composite material. (2) Preparation of graphene / polyaniline / LDH composite material

[0036] Add 0.1 g of graphene / polyaniline composite material and 70 mL of deionized water into a three-neck round-bottomed flask, ultrasonicate at room temperature for 2 h, add 2.08 g of zinc nitrate hexahydrat...

Embodiment 2

[0051] 1. Same as embodiment 1.

[0052] 2. Weigh 50g of polyurethane resin, add 20g of butyl acetate and 0.5g of graphene-based composite material, stir for 1 hour, add 25g of polyisocyanate curing agent, and stir for 1 hour to obtain graphene-based anti-corrosion polyurethane resin coating.

Embodiment 3

[0054] 1. Same as embodiment 1.

[0055] 2. Weigh 50g of phenolic resin, 0.75g of graphene-based composite material, 10g of butanol and 15g of xylene, stir for 1 hour, add 5g of polyamide curing agent, and stir for 30 minutes to obtain a graphene-based anti-corrosion phenolic resin coating.

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Abstract

The invention discloses a preparation method of a graphene-based composite material anticorrosion additive, comprising the following steps: (1) obtaining a graphene / polyaniline composite material; (2) obtaining a graphene / polyaniline / LDH composite material; ( 3) obtaining the anti-corrosion additive for the graphene-based composite material. The anticorrosion additive for graphene-based composite materials of the present invention can be uniformly dispersed in the resin, and the good physical properties of graphene and LDH can improve the physical properties of the resin coating such as hardness, toughness and impact resistance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion materials, and in particular relates to a preparation method and application of a graphene-based composite material anti-corrosion additive. Background technique [0002] Metal corrosion is a common material damage phenomenon in life, which not only affects the appearance and aesthetics of materials, but also reduces the strength and other mechanical properties of materials to a certain extent. Metal corrosion not only causes a lot of waste of resources, but also potentially poses many dangerous factors that threaten personal safety, such as cross-sea bridges, ships, docks, metal supports, and so on. How to effectively improve the anti-corrosion performance of metals has become a problem that people pay close attention to, and the research on metal anti-corrosion has emerged and developed rapidly. [0003] Covering the metal surface with an inert coating is an effective way to reduce metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D163/00C09D175/04C09D161/06
CPCC09D5/08C09D163/00C09D175/04C09D161/06C08K2003/2296C08K2003/2227C08L79/02C08K3/042C08K7/00C08K9/06C08K3/22
Inventor 许一婷王宏超谢平展戴李宗曹莹祝奥奇郭传銮吕妍陈国荣
Owner XIAMEN UNIV
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